traverseschema.cpp

来自「IBM的解析xml的工具Xerces的源代码」· C++ 代码 · 共 1,791 行 · 第 1/5 页

    fCurrentScope = Grammar::TOP_LEVEL_SCOPE;
    fTargetNSURIString = fSchemaGrammar->getTargetNamespace();
    fTargetNSURI = fURIStringPool->addOrFind(fTargetNSURIString);

    XMLSchemaDescription* gramDesc = (XMLSchemaDescription*) fSchemaGrammar->getGrammarDescription();
    gramDesc->setTargetNamespace(fTargetNSURIString);

    fGrammarResolver->putGrammar(fSchemaGrammar);
    fAttributeCheck.setValidationContext(fSchemaGrammar->getValidationContext());

    // Save current schema info
    SchemaInfo* currInfo = new (fMemoryManager) SchemaInfo(0, 0, 0, fTargetNSURI, fScopeCount,
                                          fNamespaceScope->increaseDepth(),
                                          XMLString::replicate(schemaURL, fGrammarPoolMemoryManager),
                                          fTargetNSURIString, schemaRoot,
                                          fGrammarPoolMemoryManager);

    if (fSchemaInfo) {
        fSchemaInfo->addSchemaInfo(currInfo, SchemaInfo::IMPORT);
    }

    fSchemaInfo = currInfo;
    fSchemaInfoList->put((void*) fSchemaInfo->getCurrentSchemaURL(), fSchemaInfo->getTargetNSURI(), fSchemaInfo);
    fSchemaInfo->addSchemaInfo(fSchemaInfo, SchemaInfo::INCLUDE);
    traverseSchemaHeader(schemaRoot);

    // preprocess chidren
    preprocessChildren(schemaRoot);
}


void TraverseSchema::traverseSchemaHeader(const DOMElement* const schemaRoot) {

    // Make sure that the root element is <xsd:schema>
    if (!XMLString::equals(schemaRoot->getLocalName(), SchemaSymbols::fgELT_SCHEMA)) {
        reportSchemaError(schemaRoot, XMLUni::fgXMLErrDomain, XMLErrs::InvalidXMLSchemaRoot);
    }

    // Make sure that the targetNamespace value is not empty string
    checkForEmptyTargetNamespace(schemaRoot);

    // -----------------------------------------------------------------------
    // Check Attributes
    // -----------------------------------------------------------------------
    fAttributeCheck.checkAttributes(
        schemaRoot, GeneralAttributeCheck::E_Schema, this
        , true, fSchemaInfo->getNonXSAttList()
    );

    retrieveNamespaceMapping(schemaRoot);
    unsigned short elemAttrDefaultQualified = 0;

    if (XMLString::equals(schemaRoot->getAttribute(SchemaSymbols::fgATT_ELEMENTFORMDEFAULT),
                                  SchemaSymbols::fgATTVAL_QUALIFIED)) {
        elemAttrDefaultQualified |= Elem_Def_Qualified;
    }

    if (XMLString::equals(schemaRoot->getAttribute(SchemaSymbols::fgATT_ATTRIBUTEFORMDEFAULT),
                                  SchemaSymbols::fgATTVAL_QUALIFIED)) {
        elemAttrDefaultQualified |= Attr_Def_Qualified;
    }

    fSchemaInfo->setElemAttrDefaultQualified(elemAttrDefaultQualified);
    fSchemaInfo->setBlockDefault(parseBlockSet(schemaRoot, ES_Block, true));
    fSchemaInfo->setFinalDefault(parseFinalSet(schemaRoot, ECS_Final, true));
}


XSAnnotation*
TraverseSchema::traverseAnnotationDecl(const DOMElement* const annotationElem,
                                       ValueVectorOf<DOMNode*>* const nonXSAttList,
                                       const bool topLevel) {

    // -----------------------------------------------------------------------
    // Check Attributes
    // -----------------------------------------------------------------------
    fAttributeCheck.checkAttributes(
        annotationElem, GeneralAttributeCheck::E_Annotation, this, topLevel
    );

    const XMLCh* contents = 0;
    for (DOMElement* child = XUtil::getFirstChildElement(annotationElem);
         child != 0;
         child = XUtil::getNextSiblingElement(child)) {

        const XMLCh* name = child->getLocalName();

        if (XMLString::equals(name, SchemaSymbols::fgELT_APPINFO)) {

            DOMNode* textContent = child->getFirstChild();
            if (textContent && textContent->getNodeType() == DOMNode::TEXT_NODE)
                contents = ((DOMText*) textContent)->getData();

            fAttributeCheck.checkAttributes(child, GeneralAttributeCheck::E_Appinfo, this);
        }
        else if (XMLString::equals(name, SchemaSymbols::fgELT_DOCUMENTATION)) {

            DOMNode* textContent = child->getFirstChild();
            if (textContent && textContent->getNodeType() == DOMNode::TEXT_NODE)
                contents = ((DOMText*) textContent)->getData();

            fAttributeCheck.checkAttributes(child, GeneralAttributeCheck::E_Documentation, this);
        }
        else {
            reportSchemaError(child, XMLUni::fgXMLErrDomain, XMLErrs::InvalidAnnotationContent);
        }
    }

    if (contents)
    {
        XSAnnotation* theAnnotation = 0;

        unsigned int nonXSAttSize = nonXSAttList->size();

        if (nonXSAttSize)
        {
            int annotTokenStart = XMLString::patternMatch(
                contents, SchemaSymbols::fgELT_ANNOTATION);

            if (annotTokenStart == -1) // something is wrong
                return 0;

            // set annotation element
            fBuffer.set(contents, annotTokenStart + 10);

            for (unsigned int i=0; i<nonXSAttSize; i++)
            {
                DOMNode* attNode = nonXSAttList->elementAt(i);

                if (!XMLString::equals(
                        annotationElem->getAttributeNS(
                           attNode->getNamespaceURI(), attNode->getLocalName())
                        , XMLUni::fgZeroLenString)
                   )
                {
                    continue;
                }

                fBuffer.append(chSpace);
                fBuffer.append(attNode->getNodeName());
                fBuffer.append(chEqual);
                fBuffer.append(chDoubleQuote);
                processAttValue(attNode->getNodeValue(), fBuffer);
                fBuffer.append(chDoubleQuote);
            }

            // add remaining annotation content
            fBuffer.append(contents + annotTokenStart + 10);

            theAnnotation = new (fGrammarPoolMemoryManager) XSAnnotation(fBuffer.getRawBuffer(), fGrammarPoolMemoryManager);
        }
        else
        {
            theAnnotation = new (fGrammarPoolMemoryManager) XSAnnotation(contents, fGrammarPoolMemoryManager);
        }

        /***
         * set line, col and systemId info
        ***/
        theAnnotation->setLineCol(
                                  ((XSDElementNSImpl*)annotationElem)->getLineNo()
                                , ((XSDElementNSImpl*)annotationElem)->getColumnNo()
                                 );
        theAnnotation->setSystemId(fSchemaInfo->getCurrentSchemaURL());

        return theAnnotation;
    }

    return 0;
}


/**
  * Traverse include
  *
  *    <include
  *        id = ID
  *        schemaLocation = anyURI
  *        {any attributes with non-schema namespace . . .}>
  *        Content: (annotation?)
  *    </include>
  */
void TraverseSchema::preprocessInclude(const DOMElement* const elem) {

    // -----------------------------------------------------------------------
    // Check attributes
    // -----------------------------------------------------------------------
    fAttributeCheck.checkAttributes(
        elem, GeneralAttributeCheck::E_Include, this, true, fNonXSAttList);

    // -----------------------------------------------------------------------
    // First, handle any ANNOTATION declaration
    // -----------------------------------------------------------------------
    if (checkContent(elem, XUtil::getFirstChildElement(elem), true) != 0)
        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::OnlyAnnotationExpected);

    if (fAnnotation)
        fSchemaGrammar->addAnnotation(fAnnotation);
    else if (fScanner->getGenerateSyntheticAnnotations() && fNonXSAttList->size())
    {
        fAnnotation = generateSyntheticAnnotation(elem, fNonXSAttList);
        fSchemaGrammar->addAnnotation(fAnnotation);
    }

    // -----------------------------------------------------------------------
    // Get 'schemaLocation' attribute
    // -----------------------------------------------------------------------
    const XMLCh* schemaLocation = getElementAttValue(elem, SchemaSymbols::fgATT_SCHEMALOCATION);

    if (!schemaLocation || !*schemaLocation) {
        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::DeclarationNoSchemaLocation, SchemaSymbols::fgELT_INCLUDE);
        return;
    }

    // ------------------------------------------------------------------
    // Resolve schema location
    // ------------------------------------------------------------------
    InputSource* srcToFill = resolveSchemaLocation(schemaLocation,
            XMLResourceIdentifier::SchemaInclude);
    Janitor<InputSource> janSrc(srcToFill);

    // Nothing to do
    if (!srcToFill) {
        return;
    }

    const XMLCh* includeURL = srcToFill->getSystemId();
    SchemaInfo* includeSchemaInfo = fSchemaInfoList->get(includeURL, fTargetNSURI);

    if (includeSchemaInfo) {

        fSchemaInfo->addSchemaInfo(includeSchemaInfo, SchemaInfo::INCLUDE);
        return;
    }

    // ------------------------------------------------------------------
    // Parse input source
    // ------------------------------------------------------------------
    if (!fParser)
        fParser = new (fGrammarPoolMemoryManager) XSDDOMParser(0, fGrammarPoolMemoryManager, 0);

    fParser->setValidationScheme(XercesDOMParser::Val_Never);
    fParser->setDoNamespaces(true);
    fParser->setUserEntityHandler(fEntityHandler);
    fParser->setUserErrorReporter(fErrorReporter);

    // Should just issue warning if the schema is not found
    bool flag = srcToFill->getIssueFatalErrorIfNotFound();
    srcToFill->setIssueFatalErrorIfNotFound(false);

    fParser->parse(*srcToFill);

    // Reset the InputSource
    srcToFill->setIssueFatalErrorIfNotFound(flag);

    if (fParser->getSawFatal() && fScanner->getExitOnFirstFatal())
        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::SchemaScanFatalError);

    // ------------------------------------------------------------------
    // Get root element
    // ------------------------------------------------------------------
    DOMDocument* document = fParser->getDocument();

    if (document) {

        DOMElement* root = document->getDocumentElement();

        if (root) {

            const XMLCh* targetNSURIString = root->getAttribute(SchemaSymbols::fgATT_TARGETNAMESPACE);

            // check to see if targetNameSpace is right
            if (*targetNSURIString
                && !XMLString::equals(targetNSURIString,fTargetNSURIString)){
                reportSchemaError(root, XMLUni::fgXMLErrDomain, XMLErrs::IncludeNamespaceDifference,
                                  schemaLocation, targetNSURIString);
                return;
            }

            // if targetNamespace is empty, change it to includ'g schema
            // targetNamespace
            if (!*targetNSURIString && root->getAttributeNode(XMLUni::fgXMLNSString) == 0
                && fTargetNSURI != fEmptyNamespaceURI) {
                root->setAttribute(XMLUni::fgXMLNSString, fTargetNSURIString);
            }

            // --------------------------------------------------------
            // Update schema information with included schema
            // --------------------------------------------------------
            SchemaInfo* saveInfo = fSchemaInfo;

            fSchemaInfo = new (fMemoryManager) SchemaInfo(0, 0, 0, fTargetNSURI, fScopeCount,
                                         fNamespaceScope->increaseDepth(),
                                         XMLString::replicate(includeURL, fGrammarPoolMemoryManager),
                                         fTargetNSURIString, root,
                                         fGrammarPoolMemoryManager);

            fSchemaInfoList->put((void*) fSchemaInfo->getCurrentSchemaURL(),
                                 fSchemaInfo->getTargetNSURI(), fSchemaInfo);
            fPreprocessedNodes->put((void*) elem, fSchemaInfo);
            saveInfo->addSchemaInfo(fSchemaInfo, SchemaInfo::INCLUDE);
            traverseSchemaHeader(root);
            preprocessChildren(root);
            fSchemaInfo = saveInfo;
        }
    }
}


void TraverseSchema::traverseInclude(const DOMElement* const elem) {

    SchemaInfo* includeInfo = fPreprocessedNodes->get(elem);

    if (includeInfo) {

        SchemaInfo* saveInfo = fSchemaInfo;

        fSchemaInfo = includeInfo;
        processChildren(includeInfo->getRoot());
        fSchemaInfo = saveInfo;
    }
}


/**
  * Traverse import
  *
  *    <import
  *        id = ID
  *        namespace = anyURI
  *        schemaLocation = anyURI
  *        {any attributes with non-schema namespace . . .}>
  *        Content: (annotation?)
  *    </import>
  */
void TraverseSchema::preprocessImport(const DOMElement* const elem) {

    // -----------------------------------------------------------------------
    // Check attributes
    // -----------------------------------------------------------------------
    fAttributeCheck.checkAttributes(
        elem, GeneralAttributeCheck::E_Import, this, true, fNonXSAttList);

    // -----------------------------------------------------------------------
    // First, handle any ANNOTATION declaration
    // -----------------------------------------------------------------------
    if (checkContent(elem, XUtil::getFirstChildElement(elem), true) != 0)
        reportSchemaError(elem, XMLUni::fgXMLErrDomain, XMLErrs::OnlyAnnotationExpected);

    if (fAnnotation)
        fSchemaGrammar->addAnnotation(fAnnotation);
    else if (fScanner->getGenerateSyntheticAnnotations() && fNonXSAttList->size())
    {
        fAnnotation = generateSyntheticAnnotation(elem, fNonXSAttList);
        fSchemaGrammar->addAnnotation(fAnnotation);
    }
    // -----------------------------------------------------------------------
    // Handle 'namespace' attribute
    // -----------------------------------------------------------------------